Application and Kit Components Installation Instructions

1830M, Option DJ20. Installation Form RZ-NA I-UD-HA. C E R T I F I E D. If a Model UDAS or UDAP heater is being installed above 2000 ft (610M), the input rate must be ... stalled at an altitude above 6000 ft (1830 M), the pressure switch must be changed. The high altitude ... are registered in at least the United States.

If a Model UDAS or UDAP heater is being installed above 2000 ft (610M), the input rate must be derated. This is done by adjusting the valve outlet pressure as explained in the heater installation manual. In addition, if the heater is being installed at an altitude above 6000 ft (1830 M), the pressure switch must be changed. The high altitude pressure switch ordered as Option DJ20, High Altitude Kit, varies by Model, Size, and type of application. Be sure your kit matches your installation. 0RGHO8'$3LQVWDOOHGDVVWDQGDUG3RZHU9HQWHG8QLW+HDWHU 6L]H 3NJ31 High Altitude Switch P/N Negative Pressure OFF Setpoint "w.c. Label color

WARNING: The instructions in this sheet are designed to prepare a heater for high altitude operation prior to installation. If your heater is installed, for your safety, turn off the gas and the electric before servicing. The high altitude kit is to be selected and installed by a qualified service person in accordance with these instructions and in compliance with all codes and requirements of authorities having jurisdiction. The qualified agency performing this work assumes responsibility for this installation. Form RZ-NA I-UD-HA, P/N 197081, page 1

Installation Instructions (contd) 1. In the control compartment, locate the pressure switch (See FIGURE 2). Sizes 30-125 - On the back wall of the control compartment.

FIGURE 2 - Pressure Switch Location

Sizes 150-400 - On the bracket on the bottom of the control compartment. Flame Sensor Pressure Switch - Sizes 30-125

Burner Assembly

Flame Rollout Switch (Sizes 30-125)

Venter Motor (Size 30-75 illustrated. Venter motor is in the same location for all models, but appearance is different.)

Fan Motor Gas Valve Terminal Board (24V)

Ignitor

Transformer

Transformer

Circuit Board (DSI Integrated Control Module)

High Temperature Limit Control

Control Panel Assy located on the Control Compartment Bottom Sizes 30-125 Sizes 150-400

2. Mark and disconnect the two wires attached to the pressure switch. 3. Disconnect the sensing tube from the pressure switch. 4. Locate the two screws holding the switch mounting bracket. Remove the screws (save screws) and the pressure switch. 5. Using the same screws, install the high altitude pressure switch. Attach the sensing tube and wires. IMPORTANT: When the heater is installed, as part of startup, be certain to adjust the valve outlet pressure and to attach the high altitude adjustment label that is shipped with the heater. Adjustment instructions and derated input rates and capacities are in the heater installation manual.

Make sure to allow all cleaner and primer fumes to evaporate and dry completely before applying the product or the adhesive can be contaminated. Use a hair dryer to carefully warm up the vehicle surfaces and Stompgrip between 70-100 degrees farenheig